The chimney has been erected at the beginning of the Earth Tubes to allow fresh air into the garage and the temporary living quarters!
Earth tube chimney
Earth tube chimney
The square chimney made out of old 300mm (a foot) wide 18mm OSB sheets, screwed together and placed against the concrete tunnel coming from the concrete box above the ends of the Earth Tubes. It sticks above the ground about 1500mm (5feet).
Earth tube chimney
a layer of geotextile was stapled over the opening to stop large dust particles and insects from getting into our tubes! And a lid with vertical guards to stop the rain getting in too!
Earth tube chimney